The map shows land reclaimed for Government works but more importantly, the extent of the proposed subdivision west of the railway to the ocean. Also of note is the area now known as Buckland Hill, designated entirely to harbour works and quarries. The quarries provided the limestone base for the Perth to Fremantle Road (now Stirling Highway) in the mid 19th Century, and in the early 20th Century, limestone for the extensive harbour works initiated by C Y O’Connor.